Enger, Eldon D. Environmental science : a study of interrelationships / Eldon D. Enger, Bradley F. Smith. - 12th ed. - Boston : McGraw-Hill Higher Education, c2010. - xxvi, 485 p. : col. ill., col. map ; 28 cm. Includes index. ISBN: 9780073383200 (pbk. : alk. paper) 0073383201 (pbk. : alk. paper) LCCN: 2008051006 Subjects--Topical Terms: Environmental sciences--Textbooks. Dewey Class. No.: 363.7